1
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Tinsley EK, Bailey NW. Intrasexual aggression reduces mating success in field crickets. Ecol Evol 2023; 13:e10557. [PMID: 37791290 PMCID: PMC10542478 DOI: 10.1002/ece3.10557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 10/05/2023] Open
Abstract
Aggressive behaviour is thought to have significant consequences for fitness, sexual selection and the evolution of social interactions, but studies measuring its expression across successive encounters-both intra- and intersexual-are limited. We used the field cricket Teleogryllus oceanicus to evaluate factors affecting repeatability of male aggression and its association with mating success. We quantified focal male aggression expressed towards partners and received from partners in three successive, paired trials, each involving a different male partner. We then measured a proxy of focal male fitness in mating trials with females. The likelihood and extent of aggressive behaviour varied across trials, but repeatability was negligible, and we found no evidence that patterns of focal aggression resulted from interacting partner identity or prior experience. Males who consistently experienced aggression in previous trials showed decreased male mating 'efficiency'-determined by the number of females a male encountered before successfully mating, but the effect was weak and we found no other evidence that intrasexual aggression was associated with later mating success. During mating trials, however, we observed unexpected male aggression towards females, and this was associated with markedly decreased male mating efficiency and success. Our findings suggest that nonadaptive aggressive spillover in intersexual mating contexts could be an important but underappreciated factor influencing the evolution of intrasexual aggression.
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Affiliation(s)
- Eleanor K. Tinsley
- School of BiologyUniversity of St AndrewsSt AndrewsUK
- Institute of ZoologyZoological Society LondonLondonUK
- University College LondonLondonUK
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2
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Simmons LW, Lovegrove M, Du X(B, Ren Y, Thomas ML. Humidity stress and its consequences for male pre- and post-copulatory fitness traits in an insect. Ecol Evol 2023; 13:e10244. [PMID: 37404700 PMCID: PMC10316369 DOI: 10.1002/ece3.10244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/13/2023] [Accepted: 06/15/2023] [Indexed: 07/06/2023] Open
Abstract
Global declines in insect abundance are of significant concern. While there is evidence that climate change is contributing to insect declines, we know little of the direct mechanisms responsible for these declines. Male fertility is compromised by increasing temperatures, and the thermal limit to fertility has been implicated as an important factor in the response of insects to climate change. However, climate change is affecting both temperature and hydric conditions, and the effects of water availability on male fertility have rarely been considered. Here we exposed male crickets Teleogryllus oceanicus to either low or high-humidity environments while holding temperature constant. We measured water loss and the expression of both pre- and postmating reproductive traits. Males exposed to a low-humidity environment lost more water than males exposed to a high-humidity environment. A male's cuticular hydrocarbon profile (CHC) did not affect the amount of water lost, and males did not adjust the composition of their CHC profiles in response to hydric conditions. Males exposed to a low-humidity environment were less likely to produce courtship song or produced songs of low quality. Their spermatophores failed to evacuate and their ejaculates contained sperm of reduced viability. The detrimental effects of low-humidity on male reproductive traits will compromise male fertility and population persistence. We argue that limits to insect fertility based on temperature alone are likely to underestimate the true effects of climate change on insect persistence and that the explicit incorporation of water regulation into our modeling will yield more accurate predictions of the effects of climate change on insect declines.
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Affiliation(s)
- Leigh W. Simmons
- Centre for Evolutionary Biology, School of Biological SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Maxine Lovegrove
- Centre for Evolutionary Biology, School of Biological SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Xin (Bob) Du
- Harry Butler InstituteMurdoch UniversityPerthWestern AustraliaAustralia
| | - Yonglin Ren
- Harry Butler InstituteMurdoch UniversityPerthWestern AustraliaAustralia
| | - Melissa L. Thomas
- Harry Butler InstituteMurdoch UniversityPerthWestern AustraliaAustralia
- CSIRO Health and BiosecurityCSIRO Land and WaterFloreatWestern AustraliaAustralia
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3
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Simmons LW, Lovegrove M, Du B, Ren Y, Thomas ML. Ontogeny can provide insight into the roles of natural and sexual selection in cricket cuticular hydrocarbon evolution. J Exp Biol 2022; 225:276022. [PMID: 35848820 DOI: 10.1242/jeb.244375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/12/2022] [Indexed: 11/20/2022]
Abstract
The often complex cocktails of hydrocarbon compounds found on the cuticles of insects can serve both naturally and sexually selected functions, contributing to an individual's ability to withstand water loss and attract mating partners. However, whether natural and sexual selection act synergistically or antagonistically on a species' cuticular hydrocarbon (CHC) profile remains unclear. Here we examined the ontogeny of the CHC profile in a species of cricket Teleogryllus oceanicus while manipulating humidity during development. We predicted that juvenile crickets should produce only those compounds that contribute to desiccation resistance, while those compounds contributing specifically to male attractiveness should be produced only at sexual maturity. Further, if attractive CHCs come at a cost to desiccation resistance as predicted by some models of sexual selection, then males reared under low humidity should be constrained to invest less in attractive CHCs. Crickets reared under low humidity produced more long chained methyl branched alkanes, alkenes and alkadienes than did crickets reared under high humidity. The abundance of n-alkanes was unaffected by humidity treatment. Sexual dimorphism in the CHC profile was not apparent until adult emergence and became exaggerated 10 days after emergence when crickets were sexually mature. Males produced more of the same compounds that were increased in both sexes under low humidity, but the humidity treatment did not interact with sex in determining CHC abundance. The data suggest that CHC profiles which protect crickets from desiccation might have synergistic effects on male attractiveness, as there was no evidence to suggest males trade-off a CHC profile produced in response to low humidity for one associated with sexual signalling.
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Affiliation(s)
- Leigh W Simmons
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley 6009, Australia
| | - Maxine Lovegrove
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley 6009, Australia
| | - Bob Du
- Harry Butler Institute, Murdoch University, Perth 6150, Australia
| | - Yonglin Ren
- Harry Butler Institute, Murdoch University, Perth 6150, Australia
| | - Melissa L Thomas
- Harry Butler Institute, Murdoch University, Perth 6150, Australia.,CSIRO Health and Biosecurity, CSIRO Land and Water, Floreat 6014, Australia
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4
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Hare RM, Larsdotter-Mellström H, Simmons LW. Sexual dimorphism in cuticular hydrocarbons and their potential use in mating in a bushcricket with dynamic sex roles. Anim Behav 2022. [DOI: 10.1016/j.anbehav.2022.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Fuciarelli TM, Rollo CD. Ionizing radiation alters male Acheta domesticus courtship songs that are critical for mating success. Anim Behav 2021. [DOI: 10.1016/j.anbehav.2021.06.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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6
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Fuciarelli TM, Rollo CD. Impacts of ionization radiation on the cuticular hydrocarbon profile and mating success of male house crickets ( Acheta domesticus). Int J Radiat Biol 2021; 97:564-570. [PMID: 33471571 DOI: 10.1080/09553002.2021.1876954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/31/2020] [Accepted: 01/08/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE Ionizing radiation is well known to have drastic impacts on major life history features including survivorship, growth, fertility, and longevity. What is much less appreciated is how radiation stress can cause changes to more subtle traits, such as those associated with sexual signaling, an underappreciated but vital aspect of insect reproduction. In the House Cricket (Acheta domesticus) cuticular hydrocarbons are vital for sex and species recognition, as well as a possible indicator of stress, making them crucial for successful mating and reproduction. MATERIALS AND METHODS Here, we analyze the impacts of ionizing radiation on the cuticular hydrocarbons of male crickets and its subsequent impacts on mating success. We exposed juvenile (14-day, 4th instar) male crickets to a broad range of radiation doses (2 Gy - 2 Gy). RESULTS We detected significant changes in individual cuticular hydrocarbons across a broad range of doses in mature male crickets using gas-liquid chromatography. Specifically, dose was identified as a significant contributing factor to hydrocarbon increases p < .0001. Mating success was significantly reduced in 12 Gy (p < .0001), 10 Gy (0.0001), and 7 Gy (0.0060) groups compared to non-irradiated controls. CONCLUSION Insect chemical communication can be species specific, and functionally specialized. Here, we show that radiation can alter the chemical signals used to attract mates in a large bodied insect and this may be a contributing factor to the described reduction in male mating success. Further research should be conducted to further analyze the various modes of communication employed by male crickets to attract mates i.e. acoustic signaling, and how this may also contribute to the reduction in mating success seen in irradiated males.
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Affiliation(s)
| | - C David Rollo
- Department of Biology, McMaster University, Hamilton, ON, Canada
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7
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Talavera JB, Collosi E, Clark MI, Robertson JM, Gray DA. Minimal prezygotic isolation between ecologically divergent sibling species. Biol J Linn Soc Lond 2021; 132:32-43. [PMID: 33390615 PMCID: PMC7761596 DOI: 10.1093/biolinnean/blaa178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/28/2020] [Indexed: 11/14/2022]
Abstract
Divergence in mating signals typically accompanies speciation. We examine two ecologically divergent sibling species of crickets to assess the degree and timing of the evolution of prezygotic reproductive isolation. Gryllus saxatilis occurs in rocky habitats throughout western North America with long-winged individuals capable of long-distance dispersal; Gryllus navajo is endemic to red-rock sandstone areas of south-eastern Utah and north-eastern Arizona and has short-winged individuals only capable of limited dispersal. Previous genetic work suggested some degree of introgression and/or incomplete lineage sorting is likely. Here we: (1) use restriction site associated DNA sequencing (RAD-seq) genetic data to describe the degree of genetic divergence among species and populations; (2) examine the strength of prezygotic isolation by (i) quantifying differences among male mating songs, and (ii) testing whether females prefer G. saxatilis or G. navajo calling songs. Our results show that genetically distinct "pure" species populations and genetically intermediate populations exist. Male mating songs are statistically distinguishable, but the absolute differences are small. In playback experiments, females from pure populations had no preference based on song; however, females from a genetically intermediate population preferred G. navajo song. Together these results suggest that prezygotic isolation is minimal, and mediated by female behaviour in admixed populations.
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Affiliation(s)
- Janelle B Talavera
- Department of Biology, California State University, Northridge, Northridge, CA, USA
| | - Emma Collosi
- Department of Biology, California State University, Northridge, Northridge, CA, USA
| | - Meaghan I Clark
- Department of Biology, California State University, Northridge, Northridge, CA, USA
| | - Jeanne M Robertson
- Department of Biology, California State University, Northridge, Northridge, CA, USA
| | - David A Gray
- Department of Biology, California State University, Northridge, Northridge, CA, USA
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8
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Leeson SA, Kennington WJ, Evans TA, Simmons LW. Phenotypic plasticity but no adaptive divergence in cuticular hydrocarbons and desiccation resistance among translocated populations of dung beetles. Evol Ecol 2020. [DOI: 10.1007/s10682-020-10074-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Moran PA, Hunt J, Mitchell C, Ritchie MG, Bailey NW. Sexual selection and population divergence III: Interspecific and intraspecific variation in mating signals. J Evol Biol 2020; 33:990-1005. [PMID: 32281707 DOI: 10.1111/jeb.13631] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/25/2020] [Accepted: 03/30/2020] [Indexed: 11/28/2022]
Abstract
A major challenge for studying the role of sexual selection in divergence and speciation is understanding the relative influence of different sexually selected signals on those processes in both intra- and interspecific contexts. Different signals may be more or less susceptible to co-option for species identification depending on the balance of sexual and ecological selection acting upon them. To examine this, we tested three predictions to explain geographic variation in long- versus short-range sexual signals across a 3,500 + km transect of two related Australian field cricket species (Teleogryllus spp.): (a) selection for species recognition, (b) environmental adaptation and (c) stochastic divergence. We measured male calling song and male and female cuticular hydrocarbons (CHCs) in offspring derived from wild populations, reared under common garden conditions. Song clearly differentiated the species, and no hybrids were observed suggesting that hybridization is rare or absent. Spatial variation in song was not predicted by geography, genetics or climatic factors in either species. In contrast, CHC divergence was strongly associated with an environmental gradient supporting the idea that the climatic environment selects more directly upon these chemical signals. In light of recently advocated models of diversification via ecological selection on secondary sexual traits, the different environmental associations we found for song and CHCs suggest that the impact of ecological selection on population divergence, and how that influences speciation, might be different for acoustic versus chemical signals.
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Affiliation(s)
- Peter A Moran
- Centre for Biological Diversity, School of Biology, University of St Andrews, Fife, UK
| | - John Hunt
- School of Science and Health, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Christopher Mitchell
- School of Science and Health, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Michael G Ritchie
- Centre for Biological Diversity, School of Biology, University of St Andrews, Fife, UK
| | - Nathan W Bailey
- Centre for Biological Diversity, School of Biology, University of St Andrews, Fife, UK
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10
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Heggeseth B, Sim D, Partida L, Maroja LS. Influence of female cuticular hydrocarbon (CHC) profile on male courtship behavior in two hybridizing field crickets Gryllus firmus and Gryllus pennsylvanicus. BMC Evol Biol 2020; 20:21. [PMID: 32019492 PMCID: PMC7001378 DOI: 10.1186/s12862-020-1587-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 01/27/2020] [Indexed: 11/10/2022] Open
Abstract
Background The hybridizing field crickets, Gryllus firmus and Gryllus pennsylvanicus have several barriers that prevent gene flow between species. The behavioral pre-zygotic mating barrier, where males court conspecifics more intensely than heterospecifics, is important because by acting earlier in the life cycle it has the potential to prevent a larger fraction of hybridization. The mechanism behind such male mate preference is unknown. Here we investigate if the female cuticular hydrocarbon (CHC) profile could be the signal behind male courtship. Results While males of the two species display nearly identical CHC profiles, females have different, albeit overlapping profiles and some females (between 15 and 45%) of both species display a male-like profile distinct from profiles of typical females. We classified CHC females profile into three categories: G. firmus-like (F; including mainly G. firmus females), G. pennsylvanicus-like (P; including mainly G. pennsylvanicus females), and male-like (ML; including females of both species). Gryllus firmus males courted ML and F females more often and faster than they courted P females (p < 0.05). Gryllus pennsylvanicus males were slower to court than G. firmus males, but courted ML females more often (p < 0.05) than their own conspecific P females (no difference between P and F). Both males courted heterospecific ML females more often than other heterospecific females (p < 0.05, significant only for G. firmus males). Conclusions Our results suggest that male mate preference is at least partially informed by female CHC profile and that ML females elicit high courtship behavior in both species. Since ML females exist in both species and are preferred over other heterospecific females, it is likely that this female type is responsible for most hybrid offspring production.
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Affiliation(s)
- Brianna Heggeseth
- Department of Mathematics and Statistics, Williams College, Williamstown, MA, USA.,Department of Mathematics, Statistics, and Computer Science, Macalester College, St. Paul, MN, USA
| | - Danielle Sim
- Department of Biology, Williams College, Williamstown, MA, USA
| | - Laura Partida
- Department of Biology, Williams College, Williamstown, MA, USA
| | - Luana S Maroja
- Department of Biology, Williams College, Williamstown, MA, USA.
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11
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Pascoal S, Risse JE, Zhang X, Blaxter M, Cezard T, Challis RJ, Gharbi K, Hunt J, Kumar S, Langan E, Liu X, Rayner JG, Ritchie MG, Snoek BL, Trivedi U, Bailey NW. Field cricket genome reveals the footprint of recent, abrupt adaptation in the wild. Evol Lett 2019; 4:19-33. [PMID: 32055408 PMCID: PMC7006468 DOI: 10.1002/evl3.148] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/21/2019] [Accepted: 11/13/2019] [Indexed: 12/31/2022] Open
Abstract
Evolutionary adaptation is generally thought to occur through incremental mutational steps, but large mutational leaps can occur during its early stages. These are challenging to study in nature due to the difficulty of observing new genetic variants as they arise and spread, but characterizing their genomic dynamics is important for understanding factors favoring rapid adaptation. Here, we report genomic consequences of recent, adaptive song loss in a Hawaiian population of field crickets (Teleogryllus oceanicus). A discrete genetic variant, flatwing, appeared and spread approximately 15 years ago. Flatwing erases sound‐producing veins on male wings. These silent flatwing males are protected from a lethal, eavesdropping parasitoid fly. We sequenced, assembled and annotated the cricket genome, produced a linkage map, and identified a flatwing quantitative trait locus covering a large region of the X chromosome. Gene expression profiling showed that flatwing is associated with extensive genome‐wide effects on embryonic gene expression. We found that flatwing male crickets express feminized chemical pheromones. This male feminizing effect, on a different sexual signaling modality, is genetically associated with the flatwing genotype. Our findings suggest that the early stages of evolutionary adaptation to extreme pressures can be accompanied by greater genomic and phenotypic disruption than previously appreciated, and highlight how abrupt adaptation might involve suites of traits that arise through pleiotropy or genomic hitchhiking.
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Affiliation(s)
- Sonia Pascoal
- Department of Zoology University of Cambridge Cambridge CB2 3EJ United Kingdom
| | - Judith E Risse
- Division of Bioinformatics, Department of Plant Sciences Wageningen University & Research Wageningen 6708 PB The Netherlands.,Animal Ecology Netherlands Institute of Ecology Wageningen 6700 AB The Netherlands
| | - Xiao Zhang
- School of Biology University of St Andrews St Andrews Fife KY16 9TH United Kingdom
| | - Mark Blaxter
- Edinburgh Genomics University of Edinburgh Edinburgh EH9 3JT United Kingdom.,Institute of Evolutionary Biology University of Edinburgh Edinburgh EH9 3JT United Kingdom
| | - Timothee Cezard
- Edinburgh Genomics University of Edinburgh Edinburgh EH9 3JT United Kingdom
| | - Richard J Challis
- Edinburgh Genomics University of Edinburgh Edinburgh EH9 3JT United Kingdom
| | - Karim Gharbi
- Edinburgh Genomics University of Edinburgh Edinburgh EH9 3JT United Kingdom.,Earlham Institute Norwich Research Park Norwich NR4 7UZ United Kingdom
| | - John Hunt
- School of Science and Health and the Hawkesbury Institute for the Environment Western Sydney University Penrith NSW 2751 Australia.,Centre for Ecology and Conservation University of Exeter Penryn TR10 9FE United Kingdom
| | - Sujai Kumar
- Edinburgh Genomics University of Edinburgh Edinburgh EH9 3JT United Kingdom
| | - Emma Langan
- Edinburgh Genomics University of Edinburgh Edinburgh EH9 3JT United Kingdom.,School of Environmental Sciences University of East Anglia Norwich NR4 7UZ United Kingdom
| | - Xuan Liu
- Centre for Genomic Research University of Liverpool Liverpool L69 7ZB United Kingdom
| | - Jack G Rayner
- School of Biology University of St Andrews St Andrews Fife KY16 9TH United Kingdom
| | - Michael G Ritchie
- School of Biology University of St Andrews St Andrews Fife KY16 9TH United Kingdom
| | - Basten L Snoek
- Theoretical Biology and Bioinformatics Utrecht University Utrecht 3584 CH The Netherlands.,Terrestrial Ecology Netherlands Institute of Ecology Wageningen 6700 AB The Netherlands
| | - Urmi Trivedi
- Edinburgh Genomics University of Edinburgh Edinburgh EH9 3JT United Kingdom
| | - Nathan W Bailey
- School of Biology University of St Andrews St Andrews Fife KY16 9TH United Kingdom
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12
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Stamps GF, Shaw KL. Male use of chemical signals in sex discrimination of Hawaiian swordtail crickets (genus Laupala). Anim Behav 2019. [DOI: 10.1016/j.anbehav.2019.06.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Berson JD, Garcia-Gonzalez F, Simmons LW. Experimental evidence for the role of sexual selection in the evolution of cuticular hydrocarbons in the dung beetle, Onthophagus taurus. J Evol Biol 2019; 32:1186-1193. [PMID: 31420906 DOI: 10.1111/jeb.13519] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 07/08/2019] [Accepted: 08/12/2019] [Indexed: 11/28/2022]
Abstract
A role for sexual selection in the evolution of insect cuticular hydrocarbons (CHCs) is suggested by observations of selection acting on male CHCs during female mate choice. However, evidence that CHCs evolve in response to sexual selection is generally lacking, and there is a need to extend our understanding beyond well-studied taxa. Experimental evolution offers a powerful approach to investigate the effect of sexual selection on the evolution of insect CHCs. We conducted such an experiment using the dung beetle, Onthophagus taurus. After six, 12 and 21 generations of experimental evolution, we measured the CHCs of beetles from three populations subject to sexual selection and three populations within which sexual selection had been removed via enforced monogamy. We found that the male CHC profile responded to the experimental removal of sexual selection. Conversely, the CHC profile of females responded to the presence of sexual selection but not to its removal. These results show that sexual selection can be an important mechanism affecting the evolution of insect CHCs and that male and female CHCs can evolve independently.
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Affiliation(s)
- Jacob D Berson
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Francisco Garcia-Gonzalez
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia.,Doñana Biological Station, Spanish Research Council CSIC, Sevilla, Spain
| | - Leigh W Simmons
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
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14
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Ng SH, Simpson SJ, Simmons LW. Sex differences in nutrient intake can reduce the potential for sexual conflict over fitness maximization by female and male crickets. J Evol Biol 2019; 32:1106-1116. [DOI: 10.1111/jeb.13513] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 07/03/2019] [Accepted: 07/30/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Soon Hwee Ng
- Centre for Evolutionary Biology School of Biological Sciences University of Western Australia Crawley WA Australia
| | - Stephen J. Simpson
- Charles Perkins Centre and School of Life and Environmental Sciences The University of Sydney SydneyNSW Australia
| | - Leigh W. Simmons
- Centre for Evolutionary Biology School of Biological Sciences University of Western Australia Crawley WA Australia
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15
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Berson JD, Simmons LW. Female cuticular hydrocarbons can signal indirect fecundity benefits in an insect. Evolution 2019; 73:982-989. [DOI: 10.1111/evo.13720] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 03/09/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Jacob D. Berson
- Centre for Evolutionary Biology, School of Biological SciencesThe University of Western Australia Crawley Western Australia 6009 Australia
| | - Leigh W. Simmons
- Centre for Evolutionary Biology, School of Biological SciencesThe University of Western Australia Crawley Western Australia 6009 Australia
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16
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Moran PA, Hunt J, Mitchell C, Ritchie MG, Bailey NW. Behavioural mechanisms of sexual isolation involving multiple modalities and their inheritance. J Evol Biol 2018; 32:243-258. [DOI: 10.1111/jeb.13408] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 11/15/2018] [Accepted: 11/23/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Peter A. Moran
- School of Biological, Earth and Environmental Sciences University College Cork Cork Ireland
| | - John Hunt
- School of Science and Health Hawkesbury Institute for the Environment Western Sydney University Penrith New South Wales Australia
- Centre for Ecology and Conservation University of Exeter Penryn UK
| | - Christopher Mitchell
- School of Science and Health Hawkesbury Institute for the Environment Western Sydney University Penrith New South Wales Australia
| | - Michael G. Ritchie
- Centre for Biological Diversity School of Biology University of St Andrews Fife UK
| | - Nathan W. Bailey
- Centre for Biological Diversity School of Biology University of St Andrews Fife UK
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17
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Berson JD, Simmons LW. A costly chemical trait: phenotypic condition dependence of cuticular hydrocarbons in a dung beetle. J Evol Biol 2018; 31:1772-1781. [DOI: 10.1111/jeb.13371] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/08/2018] [Accepted: 08/28/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Jacob D. Berson
- School of Biological Sciences Centre for Evolutionary Biology The University of Western Australia Crawley WA Australia
| | - Leigh W. Simmons
- School of Biological Sciences Centre for Evolutionary Biology The University of Western Australia Crawley WA Australia
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18
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Berson JD, Simmons LW. Sexual selection across sensory modalities: female choice of male behavioral and gustatory displays. Behav Ecol 2018. [DOI: 10.1093/beheco/ary085] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jacob D Berson
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Leigh W Simmons
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, Western Australia, Australia
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19
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Bertram SM, Loranger MJ, Thomson IR, Harrison SJ, Ferguson GL, Reifer ML, Corlett DH, Gowaty PA. Choosy males in Jamaican field crickets. Anim Behav 2017. [DOI: 10.1016/j.anbehav.2017.09.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Pascoal S, Mendrok M, Wilson AJ, Hunt J, Bailey NW. Sexual selection and population divergence II. Divergence in different sexual traits and signal modalities in field crickets (Teleogryllus oceanicus
). Evolution 2017; 71:1614-1626. [DOI: 10.1111/evo.13239] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/28/2017] [Accepted: 03/08/2017] [Indexed: 01/23/2023]
Affiliation(s)
- Sonia Pascoal
- Department of Zoology; University of Cambridge; Cambridge CB2 3EJ United Kingdom
| | - Magdalena Mendrok
- Institute of Environmental Sciences; Jagellonian University; Gronostajova 7 30-387 Kraków Poland
| | - Alastair J. Wilson
- Centre for Ecology and Conservation, School of Biosciences; University of Exeter; Cornwall Campus TR10 9EZ United Kingdom
| | - John Hunt
- Centre for Ecology and Conservation, School of Biosciences; University of Exeter; Cornwall Campus TR10 9EZ United Kingdom
- School of Science and Health and Hawkesbury Institute for the Environment, Western Sydney University; Penrith NSW 2751 Australia
| | - Nathan W. Bailey
- Centre for Biological Diversity; University of St Andrews; St. Andrews KY16 9TH United Kingdom
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21
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Finck J, Berdan EL, Mayer F, Ronacher B, Geiselhardt S. Divergence of cuticular hydrocarbons in two sympatric grasshopper species and the evolution of fatty acid synthases and elongases across insects. Sci Rep 2016; 6:33695. [PMID: 27677406 PMCID: PMC5039406 DOI: 10.1038/srep33695] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/30/2016] [Indexed: 01/02/2023] Open
Abstract
Cuticular hydrocarbons (CHCs) play a major role in the evolution of reproductive isolation between insect species. The CHC profiles of two closely related sympatric grasshopper species, Chorthippus biguttulus and C. mollis, differ mainly in the position of the first methyl group in major methyl-branched CHCs. The position of methyl branches is determined either by a fatty acid synthase (FAS) or by elongases. Both protein families showed an expansion in insects. Interestingly, the FAS family showed several lineage-specific expansions, especially in insect orders with highly diverse methyl-branched CHC profiles. We found five putative FASs and 12 putative elongases in the reference transcriptomes for both species. A dN/dS test showed no evidence for positive selection acting on FASs and elongases in these grasshoppers. However, one candidate FAS showed species-specific transcriptional differences and may contribute to the shift of the methyl-branch position between the species. In addition, transcript levels of four elongases were expressed differentially between the sexes. Our study indicates that complex methyl-branched CHC profiles are linked to an expansion of FASs genes, but that species differences can also mediated at the transcriptional level.
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Affiliation(s)
- Jonas Finck
- Behavioural Physiology, Department of Biology, Humboldt-Universität zu Berlin, Invalidenstr. 43, 10115 Berlin, Germany.,Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstr. 43, 10115 Berlin, Germany
| | - Emma L Berdan
- Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstr. 43, 10115 Berlin, Germany
| | - Frieder Mayer
- Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstr. 43, 10115 Berlin, Germany.,Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Altensteinstr. 6, 14195 Berlin, Germany
| | - Bernhard Ronacher
- Behavioural Physiology, Department of Biology, Humboldt-Universität zu Berlin, Invalidenstr. 43, 10115 Berlin, Germany
| | - Sven Geiselhardt
- Institute of Biology, Freie Universität Berlin, Haderslebener Str. 9, 12163 Berlin, Germany
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22
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Ercit K, Gwynne DT. A novel method of comparing mating success and survival reveals similar sexual and viability selection for mobility traits in female tree crickets. J Evol Biol 2016; 29:1189-200. [DOI: 10.1111/jeb.12860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 03/08/2016] [Accepted: 03/09/2016] [Indexed: 11/29/2022]
Affiliation(s)
- K. Ercit
- Department of Ecology and Evolutionary Biology; University of Toronto at Mississauga; Mississauga ON Canada
| | - D. T. Gwynne
- Department of Ecology and Evolutionary Biology; University of Toronto at Mississauga; Mississauga ON Canada
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23
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Pascoal S, Mendrok M, Mitchell C, Wilson AJ, Hunt J, Bailey NW. Sexual selection and population divergence I: The influence of socially flexible cuticular hydrocarbon expression in male field crickets (Teleogryllus oceanicus). Evolution 2016; 70:82-97. [PMID: 26678168 DOI: 10.1111/evo.12839] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 11/20/2015] [Accepted: 11/21/2015] [Indexed: 11/29/2022]
Abstract
Debates about how coevolution of sexual traits and preferences might promote evolutionary diversification have permeated speciation research for over a century. Recent work demonstrates that the expression of such traits can be sensitive to variation in the social environment. Here, we examined social flexibility in a sexually selected male trait-cuticular hydrocarbon (CHC) profiles-in the field cricket Teleogryllus oceanicus and tested whether population genetic divergence predicts the extent or direction of social flexibility in allopatric populations. We manipulated male crickets' social environments during rearing and then characterized CHC profiles. CHC signatures varied considerably across populations and also in response to the social environment, but our prediction that increased social flexibility would be selected in more recently founded populations exposed to fluctuating demographic environments was unsupported. Furthermore, models examining the influence of drift and selection failed to support a role of sexual selection in driving population divergence in CHC profiles. Variation in social environments might alter the dynamics of sexual selection, but our results align with theoretical predictions that the role social flexibility plays in modulating evolutionary divergence depends critically on whether responses to variation in the social environment are homogeneous across populations, or whether gene by social environment interactions occur.
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Affiliation(s)
- Sonia Pascoal
- Centre for Biological Diversity, University of St Andrews, St Andrews, Fife KY16 9TH, United Kingdom
| | - Magdalena Mendrok
- Institute of Environmental Sciences, Jagellonian University, Gronostajova 7, Kraków, 30-387, Poland
| | - Christopher Mitchell
- Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, 2751, Australia.,Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Cornwall Campus, Cornwall, TR10 9EZ, United Kingdom
| | - Alastair J Wilson
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Cornwall Campus, Cornwall, TR10 9EZ, United Kingdom
| | - John Hunt
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Cornwall Campus, Cornwall, TR10 9EZ, United Kingdom
| | - Nathan W Bailey
- Centre for Biological Diversity, University of St Andrews, St Andrews, Fife KY16 9TH, United Kingdom.
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24
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Insect Cuticular Hydrocarbons as Dynamic Traits in Sexual Communication. INSECTS 2015; 6:732-42. [PMID: 26463413 PMCID: PMC4598662 DOI: 10.3390/insects6030732] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 07/10/2015] [Accepted: 07/29/2015] [Indexed: 11/17/2022]
Abstract
Recent research has demonstrated extensive within-species variation in pheromone expression in insect species, contrary to the view that pheromones are largely invariant within species. In fact, many studies on insect cuticular hydrocarbons (CHCs) show that pheromones can be highly dynamic traits that can express significant short-term plasticity across both abiotic and social environments. It is likely that this variability in CHC expression contributes to their important role in sexual signaling and mate choice. In this review, I discuss CHC plasticity and how this might influence sexual communication. I also highlight two important avenues for future research: examining plasticity in how individuals respond to CHC signals, and testing how sexual communication varies across abiotic and social environments.
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25
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26
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Burdfield-Steel ER, Shuker DM. Mate-guarding in a promiscuous insect: species discrimination influences context-dependent behaviour. Evol Ecol 2014. [DOI: 10.1007/s10682-014-9726-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Simmons LW, Thomas ML, Gray B, Zuk M. Replicated evolutionary divergence in the cuticular hydrocarbon profile of male crickets associated with the loss of song in the Hawaiian archipelago. J Evol Biol 2014; 27:2249-57. [DOI: 10.1111/jeb.12478] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 08/14/2014] [Accepted: 08/14/2014] [Indexed: 02/02/2023]
Affiliation(s)
- L. W. Simmons
- Centre for Evolutionary Biology; School of Animal Biology; The University of Western Australia; Crawley WA Australia
| | - M. L. Thomas
- Centre for Evolutionary Biology; School of Animal Biology; The University of Western Australia; Crawley WA Australia
| | - B. Gray
- Department of Biology; University of California; Riverside CA USA
| | - M. Zuk
- Department of Ecology, Evolution and Behavior; University of Minnesota; St. Paul MN USA
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28
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Gray B, Bailey NW, Poon M, Zuk M. Multimodal signal compensation: do field crickets shift sexual signal modality after the loss of acoustic communication? Anim Behav 2014. [DOI: 10.1016/j.anbehav.2014.04.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Steiger S, Stökl J. The Role of Sexual Selection in the Evolution of Chemical Signals in Insects. INSECTS 2014; 5:423-38. [PMID: 26462692 PMCID: PMC4592599 DOI: 10.3390/insects5020423] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 05/16/2014] [Accepted: 05/20/2014] [Indexed: 11/16/2022]
Abstract
Chemical communication is the most ancient and widespread form of communication. Yet we are only beginning to grasp the complexity of chemical signals and the role they play in sexual selection. Focusing on insects, we review here the recent progress in the field of olfactory-based sexual selection. We will show that there is mounting empirical evidence that sexual selection affects the evolution of chemical traits, but form and strength of selection differ between species. Studies indicate that some chemical signals are expressed in relation to an individual's condition and depend, for example, on age, immunocompetence, fertility, body size or degree of inbreeding. Males or females might benefit by choosing based on those traits, gaining resources or "good genes". Other chemical traits appear to reliably reflect an individual's underlying genotype and are suitable to choose a mating partner that matches best the own genotype.
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Affiliation(s)
- Sandra Steiger
- Institute of Experimental Ecology, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
| | - Johannes Stökl
- Institute of Zoology, University of Regensburg, Universitätstraße 31, 93053 Regensburg, Germany.
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30
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Gershman S, Delcourt M, Rundle HD. Sexual selection on Drosophila serrata
male pheromones does not vary with female age or mating status. J Evol Biol 2014; 27:1279-86. [DOI: 10.1111/jeb.12407] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 03/02/2014] [Accepted: 03/25/2014] [Indexed: 11/30/2022]
Affiliation(s)
- S. Gershman
- Department of Biology; University of Ottawa; Ottawa ON Canada
- Department of Evolution; Ecology and Organismal Biology; The Ohio State University at Marion; OH USA
| | - M. Delcourt
- Department of Biology; University of Ottawa; Ottawa ON Canada
| | - H. D. Rundle
- Department of Biology; University of Ottawa; Ottawa ON Canada
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31
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Burdfield-Steel ER, Shuker DM. The evolutionary ecology of the Lygaeidae. Ecol Evol 2014; 4:2278-301. [PMID: 25360267 PMCID: PMC4201440 DOI: 10.1002/ece3.1093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/07/2014] [Accepted: 04/08/2014] [Indexed: 11/21/2022] Open
Abstract
The Lygaeidae (sensu lato) are a highly successful family of true bugs found worldwide, yet many aspects of their ecology and evolution remain obscure or unknown. While a few species have attracted considerable attention as model species for the study of insect physiology, it is only relatively recently that biologists have begun to explore aspects of their behavior, life history evolution, and patterns of intra- and interspecific ecological interactions across more species. As a result though, a range of new phenotypes and opportunities for addressing current questions in evolutionary ecology has been uncovered. For example, researchers have revealed hitherto unexpectedly rich patterns of bacterial symbiosis, begun to explore the evolutionary function of the family's complex genitalia, and also found evidence of parthenogenesis. Here we review our current understanding of the biology and ecology of the group as a whole, focusing on several of the best-studied characteristics of the group, including aposematism (i.e., the evolution of warning coloration), chemical communication, sexual selection (especially, postcopulatory sexual selection), sexual conflict, and patterns of host-endosymbiont coevolution. Importantly, many of these aspects of lygaeid biology are likely to interact, offering new avenues for research, for instance into how the evolution of aposematism influences sexual selection. With the growing availability of genomic tools for previously “non-model” organisms, combined with the relative ease of keeping many of the polyphagous species in the laboratory, we argue that these bugs offer many opportunities for behavioral and evolutionary ecologists.
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Affiliation(s)
- Emily R Burdfield-Steel
- Centre for Biological Diversity, School of Biology, University of St Andrews Harold Mitchell Building, St Andrews, KY16 9TH, UK
| | - David M Shuker
- Centre for Biological Diversity, School of Biology, University of St Andrews Harold Mitchell Building, St Andrews, KY16 9TH, UK
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32
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Pacheco K, Dawson JW, Jutting M, Bertram SM. How age influences phonotaxis in virgin female Jamaican field crickets (Gryllus assimilis). PeerJ 2013; 1:e130. [PMID: 23940839 PMCID: PMC3740142 DOI: 10.7717/peerj.130] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 07/21/2013] [Indexed: 12/21/2022] Open
Abstract
Female mating preference can be a dominant force shaping the evolution of sexual signals. However, females rarely have consistent mating preferences throughout their lives. Preference flexibility results from complex interactions of predation risk, social and sexual experience, and age. Because residual reproductive value should theoretically decline with age, older females should not be as choosy as younger females. We explored how age influences phonotaxis towards a standard mate attraction signal using a spherical treadmill (trackball) and a no-choice experimental protocol. Female Jamaican field crickets, Gryllus assimilis, were highly variable in their phonotaxis; age explained up to 64% of this variation. Females 10 days post imaginal eclosion and older oriented toward the mate attraction signal, with 10- and 13-day females exhibiting the greatest movement in the direction of the signal. Our study suggests 10- and 13-day old females would be most responsive when quantifying the preference landscape for G. assimilis sexual signals.
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Affiliation(s)
- Karen Pacheco
- Department of Biology, Carleton University , Ottawa, Ontario , Canada
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33
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Kou R, Hsu CC. Mating enhances the probability of winning aggressive encounters in male lobster cockroaches. Horm Behav 2013; 64:546-56. [PMID: 23939458 DOI: 10.1016/j.yhbeh.2013.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 07/21/2013] [Accepted: 07/26/2013] [Indexed: 11/23/2022]
Abstract
In the present study, we report that contact with isolated female antenna significantly increases both the pheromone 3-hydroxy-2-butanone (3H-2B) release and the hemolymph JH III level in all examined aggressive posture-adopting (AP) and NP (non-AP-adopting) socially naïve males, with significantly faster concomitant pre-mating wing-raising behavior in AP as compared to NP males. 3H-2B release and JH III level were significantly increased after mating in both AP and NP males. A positive correlation was observed between mating experience and dominant status. Furthermore, mated-AP males initiated fights more rapidly and fought for a significantly longer duration than mated-NP males; retention with the paired female for 24h did not affect this increase. JH III level and 3H-2B release were significantly increased in dominant males as compared to subordinates. These results suggest that prior mating experience in invertebrates may enhance aggression in subsequent male-male encounters, with accompanying physiological (hormone and pheromone) responses.
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Affiliation(s)
- Rong Kou
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 115, Taiwan, ROC.
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34
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Simmons LW, Thomas ML, Simmons FW, Zuk M. Female preferences for acoustic and olfactory signals during courtship: male crickets send multiple messages. Behav Ecol 2013. [DOI: 10.1093/beheco/art036] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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35
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Simmons LW, Tan YF, Millar AH. Sperm and seminal fluid proteomes of the field cricket Teleogryllus oceanicus: identification of novel proteins transferred to females at mating. INSECT MOLECULAR BIOLOGY 2013; 22:115-130. [PMID: 23211034 DOI: 10.1111/imb.12007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Reproductive proteins are amongst the most evolutionarily divergent proteins known, and research on genetically well-characterized species suggests that postcopulatory sexual selection might be important in their evolution; however, we lack the taxonomic breadth of information on reproductive proteins that is required to determine the general importance of sexual selection for their evolution. We used transcriptome sequencing and proteomics to characterize the sperm and seminal fluid proteins of a cricket, Teleogryllus oceanicus, that has been widely used in the study of postcopulatory sexual selection. We identified 57 proteins from the sperm of these crickets. Many of these had predicted function in glycolysis and metabolism, or were structural, and had sequence similarity to sperm proteins found across taxa ranging from flies to humans. We identified 21 seminal fluid proteins, some of which resemble those found to be involved in postmating changes to female reproduction in other species. Some 27% of sperm proteins and 48% of seminal fluid proteins were of unknown function. The characterization of seminal fluid proteins in this species will allow us to explore their adaptive significance, and to contribute comparative data that will facilitate a general appreciation of the evolution of reproductive proteins within and among animal taxa.
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Affiliation(s)
- L W Simmons
- Centre for Evolutionary Biology, The University of Western Australia, Crawley, WA, Australia.
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36
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Bailey NW, French N. Same-sex sexual behaviour and mistaken identity in male field crickets, Teleogryllus oceanicus. Anim Behav 2012. [DOI: 10.1016/j.anbehav.2012.08.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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37
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Hunt J, Snook RR, Mitchell C, Crudgington HS, Moore AJ. Sexual selection and experimental evolution of chemical signals in Drosophila pseudoobscura. J Evol Biol 2012; 25:2232-41. [PMID: 22984915 DOI: 10.1111/j.1420-9101.2012.02603.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 07/04/2012] [Accepted: 07/19/2012] [Indexed: 11/30/2022]
Abstract
Our expectations for the evolution of chemical signals in response to sexual selection are uncertain. How are chemical signals elaborated? Does sexual selection result in complexity of the composition or in altered quantities of expression? We addressed this in Drosophila pseudoobscura by examining male and female cuticular hydrocarbons (CHs) after 82 generations of elevated (E) sexual selection or relaxed sexual selection through monogamy (M). The CH profile consisted of 18 different components. We extracted three eigenvectors using principal component analysis that explained 72% of the variation. principal component (PC)1 described the amount of CHs produced, PC2 the trade-off between short- and long-chain CHs and PC3 the trade-off between apparently arbitrary CHs. In both sexes, the amount of CHs produced was greater in flies from the E treatment. PC3 was also higher, indicating that sexual selection also influenced the evolution of CH composition. The sexes differed in all three PCs, indicating substantial sexual dimorphism in this species, although the magnitude of this dimorphism was not increased as a result of our experimental evolution. Collectively, our work provides direct evidence that sexual selection plays an important role in the evolution of CHs in D. pseudoobscura and that both increased quantity and overall composition are targeted.
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Affiliation(s)
- J Hunt
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Cornwall Campus, Penryn, UK
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38
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Nelson XJ, Jackson RR. The role of numerical competence in a specialized predatory strategy of an araneophagic spider. Anim Cogn 2012; 15:699-710. [PMID: 22526693 DOI: 10.1007/s10071-012-0498-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 03/30/2012] [Accepted: 04/06/2012] [Indexed: 10/28/2022]
Abstract
Although a wide range of vertebrates have been considered in research on numerical competence, little is known about the role of number-related decisions in the predatory strategies of invertebrates. Here, we investigate how numerical competence is expressed in a highly specialized predatory strategy adopted by the small juveniles of Portia africana when practicing communal predation, with the prey being another spider, Oecobius amboseli. Two or more P. africana juveniles sometimes settle by the same oecobiid nest and then share the meal after one individual captures the oecobiid. Experiments were designed to clarify how these predators use number-related cues in conjunction with non-numerical cues when deciding whether to settle at a nest. We used lures (dead spiders positioned in lifelike posture) arranged in a series of 24 different scenes defined by the type, configuration and especially number of lures. On the whole, our findings suggest that P. africana juveniles base settling decisions on the specific number of already settled conspecific juveniles at the nest and express a preference for settling when the number is one instead of zero, two or three. By varying the size of the already settled juveniles and their positions around the nest, we show that factors related to continuous variables and stimulus configuration are unlikely explanations for our findings.
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Affiliation(s)
- Ximena J Nelson
- School of Biological Sciences, University of Canterbury, Christchurch, New Zealand.
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39
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The use of multimodal communication in mate choice decisions by female house crickets, Acheta domesticus. Anim Behav 2012. [DOI: 10.1016/j.anbehav.2012.02.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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40
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Bailey NW. Mate choice plasticity in the field cricket Teleogryllus oceanicus: effects of social experience in multiple modalities. Behav Ecol Sociobiol 2011. [DOI: 10.1007/s00265-011-1237-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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41
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Male crickets alter the relative expression of cuticular hydrocarbons when exposed to different acoustic environments. Anim Behav 2011. [DOI: 10.1016/j.anbehav.2011.03.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Salehialavi Y, Fritzsche K, Arnqvist G. The cost of mating and mutual mate choice in 2 role–reversed honey locust beetles. Behav Ecol 2011. [DOI: 10.1093/beheco/arr097] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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43
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Thomas ML, Simmons LW. Crickets detect the genetic similarity of mating partners via cuticular hydrocarbons. J Evol Biol 2011; 24:1793-800. [PMID: 21649764 DOI: 10.1111/j.1420-9101.2011.02319.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Animals should decipher information about the genetic make-up of conspecifics in order to enhance the fitness benefits associated with mate choice. Although there is increasing evidence to suggest that animals make genetically informed decisions about their mating partners, we understand relatively little about the sensory mechanisms informing these decisions. Here, we investigate whether cuticular hydrocarbons, chemical compounds found on the cuticle of most terrestrial arthropods, provide a means of discerning genetic similarity during mate choice in the cricket, Teleogryllus oceanicus. We found that individuals preferentially mated with partners who share more dissimilar cuticular hydrocarbon profiles and that similarity in cuticular hydrocarbon profiles between mating pairs correlated with their genetic similarity. Our results provide good evidence that cuticular hydrocarbon profiles offer a means of assessing genetic compatibility in T. oceanicus, enabling individuals to choose their most genetically suitable mate.
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Affiliation(s)
- M L Thomas
- Centre for Evolutionary Biology, School of Animal Biology, The University of Western Australia, Crawley, WA, Australia.
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44
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